gmrulz4u Posted May 17, 2003 Report Share Posted May 17, 2003 I just bought a nice vacuum gauge set and I want to do a vacuum check on my 89 Supreme's 2.8L engine. Where is the easiest/best hose connection to do so? I was thinking of using the hose that connects to the MAP sensor? Would this be OK? As far as I believe, our engines should produce about 20" HG vacuum at idle, correct? Give or take... Is the PCV valve location a good place to measure vacuum at all? THANKS! Quote Link to comment Share on other sites More sharing options...
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